PEFCにおける組付け荷重が性能と各部過電圧に及ぼす影響 : ペーパー形とクロス形拡散層の性能比較(熱工学,内燃機関,動力など)

概要

論文の詳細を見る
The performance and over voltages of the polymer electrolyte fuel cell (PEFC) were evaluated using a test apparatus in which the clamp load of a test cell could be changed between 100N and 1000N. The comparison of the performance between paper and cloth type gas diffusion layers (GDL) was also evaluated. The effect of GDL on the PEFC performance varies greatly depending on the clamp load and gas humidification condition. Under moderate humidification condition, an increase in the cell clamp load is effective in reducing IR over voltage, and thereby improving the PEFC performance significantly. However, the high clamp loads over 600N contribute slightly to the improvement in the performance. The performance of the paper type GDL is higher than that of the cloth type GDL at high clamp loads. Under high humidification condition, however, the cloth type GDL shows lower concentration over voltage, resulting in the more excellent performance at a relatively low clamp load of 300N, compared with the paper type GDL. However, when the clamp load becomes too high, because the ability to reduce concentration over voltage of the cloth type GDL is degraded, a significant difference in the performance between the paper and the cloth type GDLs can not be recognized.
社団法人日本機械学会の論文
2006-03-25